Diazine derivatives



Patented Sept. 7; 1 943 UNITED STATES PATENT *OFFICE DIAZINE DERIVATIVES Gaetano F. D'Alelio and James W. Underwood. Pittsfield, Mass assignors to General Electric Company, a corporation or New York No Drawing. Application August 18, 1942, Serial No. 455,214

g 12 Claims. (Cl. 260-251) This invention relates to the production of new where R represents a member of the class consisting of hydrogen and monovalent hydrocarbon and substituted hydrocarbon radicals, more particularly halo-hydrocarbon radicals, and Z represents a member of the class consisting of oxygen and sulfur.

Illustrative examples of radicals that R in the above formula may represent are: aliphatic (e. g., methyl, ethyl, propyl, isopropyl, butyl, secondary butyl, isobutyl, butenyl, amyl, isoamyl, hexyl, octyl, allyl, methallyl,ethallyl, crotyl, etc), including cycloaliphatie (e. g., cyclopentyl, cyclopentenyl, cyclohexyl, cyclohexenyl, cycloheptyl, eta); aryl (e. g., phenyl, diphenyl or xenyl, naphthyl, anthracyl, etc.); aliphatic-substituted aryl (e. g., tolyl, xylyl, ethylphenyl, propylphenyl, isopropylphenyl, allylphenyl, 2-butenylphenyl, tertiary-butylphenyl, etc.); aryl-substituted aliphatic (e. 3,; g., benzyl, phenylethyl, cinnamyl, phenylpropyl, .etc.) and their homolo'gues, as well as those groups with one or more of their hydrogen atoms substituted by, for example, a halogen, more particularly chlorine, bromine, fluorine or iodine. Specific examples of halogeno-substituted hydrocarbon radicals that R in the above formula may represent are: chloromethyl, chloroethyl, chlorophenyl, dichlorophenyl, ethyl chlorophenyl, chlorocyclohexyl, phenyl chloroethyl,

brom'oetyl, bromopropyl, fiuorophenyl, iodophen- Preferably R in Formula I is Such condensation products are more fully de-- scribed and are specifically claimed in our copending application Serial No. 457,872, filed September 10, 1942, as a continuation-in-part of the present application and assigned to the same assignee as the present invention.

Variousmethods may be employed to produce the chemical compounds of this invention. One suitable method comprises eifecting reaction, in the presence of a hydrohalide acceptor, between (1) a carbonyl orthiocarbonyl chloride or bromide and (2) a hydrazino'diamino [(-NHR) z] diazine in the ratio of. one mol of the former to at least two mole of the latter. This reaction may be represented by the following general equation:

[RC/ \N hydro 2 (RHN), H NiI-Nm +czx1. halide -C C- acceptor N II l [ii-o N] n Sam:

(RHN))-- I ll --NHNlI C-l-hydrolialida I -C C- acceptor In theabove equation X represents a halogen of the class consisting of chlorine and bromine, and R and Z have the same meanings as given above with reference to Formula I.

Illustrative examples of hydrazine-substituted diazines that may be employed, depending upon the particular end-product desired, are listed below:

Z-hydrazino 4,6-diamino pyrimidine 4-hydrazino 2,6-diamino py imidine (ii-hydra- 2-hydrazino 4-methy1amino G-amino pyrimidine Z-hydrazino 4-anilino6-amino pyrimidine Z-hydrazin-o 4-methylamino 6- ani1ino pyrimidine Z-hydrazino 4,6-diamino 5-methyl pyrimidine 4-hydrazino 2,6-diamino S-methyl pyrimidine Z-hydrazino 4,6-di-(methylamino) 5-ethyl pyrimidine I Z-hydrazino 4,6-dimethylamino) 5-chlorophenyl pyrimidine z-hydrazino 4,6-dianilino 5-isobutyl pyrimidine Z-hydrazino 4,6-dianilino 5-tolyl pyrimidine 4-hydrazino 2-chloroethylamino 5-methyl 6- iodoanilino pyrimidine 4-hydrazino 2,6-di-(bromotoluido) pyrimidine Z-hydrazino 4,6-di-(iodoani1ino) pyrimidine 2-hydrazino 4,6-di-(chlorobutylamino) pyrimi-' Various hydrohalide acceptors may be employed but we prefer to use a tertiary base, e. g., tertiary amines such as trialkyl (e. g., trimethyl, triethyl, tripropyl, tributyl, etc.) amines, triaryl (e. g., triphenyl, tritolyl, etc.) amines, pyridine, dimethyl aniline, etc. The reaction between the hydrazino-substituted diazine and the carbonyl or thiocarbonyl chloride or bromide may be carried out in any suitable manner, but preferably is effected in the presence of a suitable solvent or mixture of solvents. It is advisable to use an anhydrous medium as the solvent, e. g., ether, benzene, toluene, etc., because of the high degree of reactivity of the halide reactant. The reaction may be carried out under a variety of temperature and pressure conditions, for example at normal, sub-normal or at elevated temperatures and at atmospheric, sub-atmospheric or super-atmospheric pressures.

From the foregoing description it will be seen that the present invention provides a method of preparing, for example, a bis-(diamino pyrimidyl) carbazide, that is, a bis-(4,6-diamino pyrimidyl-2) carbazide or a bis-(2,6-diamino py- 2,6-di-(methallylamino) 5-xenyl rimidyl-4) carbazide which comprises efiecting reaction, in the presence of a hydrohalide acceptor, between carbonyl chloride (phosgene) and a hydrazino diamino pyrimidine (2-hydrazino 4,6- damino pyrimidine or 4-hydrazino 2,6-diamino pyrimidine) in the ratio of one mol of the former to at least two mols of th latter. In a similar manner a bis- (diamino pyrimidyl) thiocarbazide is prepared by effecting reaction, in the presence of a, hydrohalide acceptor, between thiocarbonyl chloride (thiophosgene) and a hydrazino diamino pyrimidine in the ratio of one mol of the former to at least two mols of the latter.

Another method of preparing the new chemical compounds of this invention comprises effecting reaction, under heat, preferably in aqueous solution, between 1) a hydrazino diamino [(NHR)2] diazine, numerous examples of which have been given above, and (2) urea. or

thiourea. This reaction may be represented by the following general equation:

In this equation R and Z have the same meanings as given above with reference to Formula I. Instead of water, other solvents or mixtures of solvents'may be employed, e. 8., alcohol or a mixture of alcohol and water. The reaction may be effected at atmospheric, sub-atmospheric or superatmospheric pressures, but preferably is effected at atmospheric pressure. In all cases it is necessary to carry out the reaction under conditions such as will result in the formation of ammonia as a by-product of the reaction. The following examples are illustrative of this method of preparing the new chemical compounds of this invention. All parts are by weight.

Example 1 This example illustrates the preparation of bis-[2,6-di-(methylamino) pyrimidy1-4] carbazide, which also may be named bis-[2,4-di- (methylamino) pyrimidyl-6l carbazide.

were heated together under reflux at the boiling temperature of the mass for 16 hours, at the end of which period of time no more ammonia (a byproduct of the reaction) could be detected. The reaction mass was cooled and the precipitated product comprising bis-[2,6-di-(methylamino) pyrimidyl-4l carbazide was filtered off, washed well with water and dried. A yield of 146 parts of the purified and dried material was obtained.

Example 2 Bis-[4,6-di-(methylamino) pyrimidyl-2] carbazide is prepared in essentially the same manner as described under Example 1 with the exception that 150 parts of Z-hydrazino 4,6-di-(methylamino) pyrimidine are used in place of 150 parts of 4-hydrazino 2,6-di-(methylamino) pyrimidine.

Example 3 Bis-[2,6-di-(methylamino) pyrimidyl-4] thiocarbazide is prepared in essentially the same manner as described under Example 1 with the exception that 34 parts of thiourea are used in place of 26.8 parts of urea.

Example 4 Bis-(2,6-diamino pyrimidyl-4) carbazide is prepared in essentially the same manner as described under Example 1 with the exception that parts of 4-hydrazino 2,6-diamino pyrimidine are used instead of parts of i-hydrazino 2,6- di-(methylamino) pyrimidine.

mm BisA-ifi-diamino pyrimidyl-2) carbazide is prepared in essentially the same manner as described under Example 1 with the exception that 125 parts of Z-hydrazino 4,6-diamino pyrimidine are used in place of 150 parts of 4-hydrazino 2,6- di-(methylamino) pyrimidine.

Example 6 Bis-(2,6-diamino pyrimidyl-4) thiocarbazide is prepared in essentially the same manner as described under Example 1 with the exception that 125 parts of 4-hydrazino 2,6-diamino pyrimidine are used instead of 150 parts of 4-hydrazino 2,6- di- (methylamino) pyrimidine and 34 parts of thiourea are used in place of 26.8 parts of urea.

Example 7 Bis-(4,6-diamino 5-methyl pyrimidyl-z) carbazide Bis-(2,6-diamino' 5-ethyl pyrimidyl-4) carbazide Bis-(4,6-diamino 5-propyl pyrimidyl-2) thiocarbazide Bis-(2,6-diamino 5-phenyl pyrimidyl-4) thiocar;

bazide Bis-[4,6-di-(isobutylamino) pyrimidy1-2] carbazide Bis-[4,6-di-(propenylamino) pyrimidyl-2] carbazide Y Bis-[4,6-di-(cyclopentylamino) 5-propyl pyrimidyl-2] carbazide Bis-(4,6-diamilino pyrimidyl-z) cal-bazide Bis-(4,6-dianilino 5-phenyl pyrimidyl-2) thiocarbazide Bis-(4,6-ditoluido pyrimidyl-2) carbazide Bis-(4,6-ditoluido 5 chloroethyl pyrimidyl-Z) carbazide Bis-(4-methy1amino G-amino pyrimidyl-Z) carbazide Bis- (4-anilino 6-amino pyrimidyl-Z) carbazide Bis-(4-methylamino B-anilino pyrimidvl-Z) carbazide Bis- (-i-methylamino 5-fluorophenyl-6-ethylamino pyrimidyl-2) carbazide Bis-(2-methylamino fi-bromoanilino pyrimidyl- 4) thiocarbazide Bis-[2,6-di-(benzylamin) pyrimidyl-il carbazide V Bis-[2,6-di-(phenethylamino) pyrimidyl-4] carbazide Bis-[2,6 di (ethylphenylamino) pyrimidy1-4] carbazide Bis-[2,6-di-(naphthylamino) pyrimidy1-4] carbazide Bis- [4,6-di-(iodoxy1idino) pyrimidyl-2] carbazide Bis-(4,6-diamino -bromoethyl pyrimidyl-2) carbazide Bis-(4-methylamino S-bromophenyl 6-anilino pyrimidyl-z) thiocarbazide Bis-(2,6-dianilino pyrimidyl-4) carbazide Bis-(4,6 dianilino pyrimldyl-2) thiocarbazide Bis-(2,6-dianilino pyrimidyL-4) thiocarbazide Bis-(2,6-ditoluido pyrimidyl-4) carbazide 3 Big-glfi-di-(chloroanflinol Dyrimidyl-2l cube- V Bis-[2,8-di-(bromoanilino) pyrimidyl-4] thiocar- I bazide Bis-[4,6-di-(iodotoluido) pyrimidyl-2] car-bazide lggfi-di-(fluoroanilino) pyrimidyl-il thiocar- Bis-(4.8-dixylidino pyrimidyl-2) carbazide Bis-.(2,6-dixylidino pyrimidyl-4) thiocarbazide Bis-[4,6-di-(cyclohexylamino) fi-phenyl pyrimi yl-zl car-bazide Bis-[2,6-di-(octylamino) 5-ethyl pyrimidyl-fl thiocarbazide Bis-[4,6-di-(allylamino) 5-allyl pyrimidyl 2] 'carbazide Bis-[2,6 a1- (cyclohexenylamino) pyrlmidyl-fl car-bazide Bis-[4,6-di-(methallylamino) 5-xenyl pyrimidyl- 2] carbazide Bis-(4,6-diamino 5-cyclohexyl pyrimidyl-2) thiocarbazide BizlG-diamino 5-methyl pyrimidyl-i) carba- In a manner similar to that described above with particular reference to the production of the bis-pyrimidyl (lga-diazinyl) carbazides and thiocarbazides. corresponding derivatives of/ the if or ortho-diazines (pyridazines) and of the or pared;

What we claim as newand desire to secure by Letters Patent of the United States is:

1.-Chemical compounds corresponding to the general formula n-c- (BHN);-L- J: E mr-rm- 1i \N/ J n where R represents a member of the class consisting of hydrogen and monovalent hydrocarbon and halo-hydrocarbon radicals, and Zreprescnts a member of the class consisting of oxygen and sulfur.

2. Chemical compounds as in claim 1 wherein R represents hydrogen.

3. Chemical compounds as in claim 1 wherein Z represents oxygen.

4. Chemical compounds as in claim 1 wherein Z represents sulfur.

5. A bis-(diamino pyrimidyl) carbazide.

6. Bis-(2,6-diamino pyrimidyl-4) carbazide.

7. A bis-(diamino pyrimidyl) thiocarbazide.

8. Bis-(2,6-diamino pyrimidyl-4) thiocarbazide.

9. A bis-[di-(methylamino pyrimidyl] carbazide.

10. Bis-[2,6-di-(methylamino) pyrimidyl-fl carbazide.

11. The method of preparing chemical compounds corresponding to the general formula para-dlazines (pyrazines) may be prebetween (1) a halide represented by the general formula CZX:

where Z represents a member 01 the class consisting of oxygen and sulfur and X represents a halogen oi the class consisting oi'chlorine and bromine, and (2) a hydrazino substituted diazine corresponding to the general formula where R has the meaning above given, the said reactants being employed in the ratio of at least two mols oi the hydrazine-substituted diazine oi (2) per mol of the halide of (1).

12. The method of preparing a bis-(diamino pyrimidyl) carbazide which comprises effecting reaction, in the presence of a hydrohalide acceptor, between carbonyl chloride and a hydrazino diamino pyrimidine in the ratio of one mol 10 or the former to at least two mols of the latter.

GAETANO F. DALELI JAMES W. UNDERWOOD.

CERTIFICATE OF CORRECTION. Patent No. 2,523,956; Septenber 7, 191g.

GAB'I'ANO F. nmmumm A It is hereby certitied that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 1, first column, line 12, for 'bromoetyl" read --bromoethy1- line 51 for aldehyde read --aldehydes-; and second column, line 28, for "theabove' read "th page 2, first column, line 61, for 'dxsunino' read --diamino-- page 5, first column, line 15, for 'diamilino" read --dianilino--; line 51 after 'fluorophenyl' strike out thehyphen; second column, line 57, after "methylamino" insert a closing parenthesis; and that the said Letters Patent should be read with this correction therein that the same may confom to the record of the ease in the Patent Office.

Signed and sealed this as day of November, A. n. 191;;

I Henry Van Arsdale (Seal) Acting Commissioner of Patents, 

